From 69566dd8be42dea7a22f625abc96e65bb4b45d1f Mon Sep 17 00:00:00 2001 From: David Daney Date: Tue, 16 Aug 2011 11:24:37 -0700 Subject: PCI: OF: Don't crash when bridge parent is NULL. In pcibios_get_phb_of_node(), we will crash while booting if bus->bridge->parent is NULL. Check for this case and avoid dereferencing the NULL pointer. Signed-off-by: David Daney Acked-by: Benjamin Herrenschmidt Acked-by: Grant Likely Signed-off-by: Jesse Barnes --- drivers/pci/of.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index c94d37ec55c..f0929934bb7 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -55,7 +55,7 @@ struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus) */ if (bus->bridge->of_node) return of_node_get(bus->bridge->of_node); - if (bus->bridge->parent->of_node) + if (bus->bridge->parent && bus->bridge->parent->of_node) return of_node_get(bus->bridge->parent->of_node); return NULL; } -- cgit v1.2.3